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Annotation of driverkit/notes/kern_dev, revision 1.1.1.1

1.1       root        1:                notes on integrating kern_dev server
                      2:                
                      3: What Jim did:
                      4: 
                      5: * option in Makefile.m68k is udma
                      6: 
                      7: * changes to kernel:
                      8: 
                      9:   * syscall_sw.c:
                     10:        #if UDMA
                     11:                FN(device_master_self, 0),              /* 69 */
                     12:        #else
                     13:                FN(kern_invalid, 0),                    /* 69 */
                     14:        #endif
                     15: 
                     16:   * add a call to ipc_dev_init() (one-time only init for kern_dev server,
                     17:     in kern_dev.c) in mach_init.c
                     18:     
                     19:   * disabled the simple lock assertion in simple_lock_try (WHY???)
                     20:   
                     21:   * Add DEVICE_PRIV_TRAP to kern/ipc_ptraps.c
                     22:   
                     23:   * ipc_basic.c:
                     24:   
                     25:        #if UDMA
                     26:        if (!dev_server_server(&kmsgptr->kmsg_header, &out_msg->kmsg_header))
                     27:        #endif
                     28: 
                     29: What I have to do:
                     30: 
                     31: * Move everything except for the mig stuff from driverkit/m88k into the 
                     32:   kernel. There's no reason for it to be outside.
                     33:   --DONE
                     34:   
                     35: * one-time only init function in kern_dev_priv. Runs before libIO is init'd.
                     36: 
                     37:   -- create device_master_port using port_alloc
                     38:   -- the rest of the stuff in autoconfig_int. This function which does the
                     39:      one-time only init should be in kern_dev_priv so it's not 
                     40:      KERNEL_FEATURES.
                     41:      
                     42:   ...DONE
                     43:   
                     44: * at autoconfig time (autoconf_int())
                     45:     -- IOLibInit()
                     46:     -- object_copyout() device_master_port to device_master_uport. This 
                     47:        should be a static in autoconf!
                     48:     -- in an IOTask thread, do
                     49:            -- autosize_bus()
                     50:            -- probe_drivers
                     51:     ...DONE
                     52:       
                     53: * autosize_bus needs to create kern_dev_t's for hard-wired devices (adb
                     54:   and frame buffer). Enumerate these neatly somehow.
                     55:   ...DONE
                     56:   
                     57: * for test, call do_autoconf() from init_main. Maybe later from a loaded
                     58:   server.
                     59:   
                     60: * Initialization sequeuence as of 2 Nov
                     61:   dev_server_init() - end of setup_main() in kern/mach_init.c
                     62:   objcInit() - main() in bsd/kern/init_main
                     63:   do_autoconf() - just after objcInit(), before vfs_mountroot
                     64:   
                     65:   currently, setup_main() calls startup() early on, and this calls 
                     66:   configure()...
                     67:   
                     68: testing libdriver in the 68k kernel
                     69: 
                     70: * configuration = LIBDRV, enables:
                     71:        kernobjc
                     72:        objctest
                     73:        driverdbg
                     74:        udma
                     75:        xpr_debug
                     76:        
                     77:   setup_main() in kern/mach_init.c
                     78:        dev_server_init()
                     79:                xprInit()
                     80:   main() in init_main.c
                     81:        _objcInit() 
                     82:        autoconf()         (before mounting root)
                     83:            IOlibIOInit()
                     84:            fork off iotaskTest() in Kernel/libIO.m
                     85:            config FAKE_DEVICE (defined in kern_dev_priv.h)
                     86:          
                     87: Configuring w/FAKE_DEVICE true:
                     88:        kernIOAttachInterrupt: avoids setting up h/w global_intr_map register
                     89:        kernIOMapDevicePage: static fake device page for mapping
                     90:        dev_intr_detach_com: avoid clearing global_intr_map
                     91:        
                     92: testing
                     93:        objtest.m has NXlock test, kernel version. Invoked via loadable
                     94:                server klibtest (in driverkit/tests), which calls
                     95:                doNXLockTest.
                     96:        IOLibIOInit forks off iotaskTest() in Kernel/libIO.m, tests 
                     97:                mach functions.
                     98:        dev_serv_test in driverkit/tests does half of Config's job,
                     99:                doing IOGetDeviceType(), IOCreateDevicePort(), etc. for
                    100:                each device known by kernel, and prints everything it 
                    101:                finds.
                    102:                
                    103:            
                    104:   

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